Boring-machine



ELI P. DRAKE, OF GREENBUSH, NEW' YORK.

BORING-MACHINE.

Specicaton of Letters Patent No. 32,125, dated April 23, 1861.

To all whom 'it may concern:

Be it known that I, ELI I. Daarin, of Greenbush, in the countyof Rensselaer and State of New York, have invented a new and novel Panel Boring and Spacing Machine, which consists of a series of auger bits or drills, each revolving in a forked rod or bar connected to a radial arm or lever, by moving the upper end of which any desired distance can be set.

It is peculiarly adapted to spacing or boring blind stiles or frames with great rapidity and from the simplicity of construction and operation it possesses advantages over other machines which in the following specitications will be clearly and distinctly shown.

The nature of my invention is as follows:

To a cast iron table or frame supported by feet an upright stand is bolted at one end, the Lipper part of which forms a curved guide, against which the uppei' end of a radial arm or lever slides, the lower part being secured to the stand near the'frame by means of a bolt. A series of bars or rods are connected to the radial arm or lever at regular distances each diminishing in length as they advance toward the standard, the lower end of' each bar or rod is forked and provided with lips or journals in which a spindle revolves one end of which forms a socket or chuck to receive an auger bit or drill.

Two side pieces are secured to the feet of the machine and situated one on each sidel the back, ends are secured by bolts and the front ends which project beyond the feet can be raised or lowered and kept in any position by set screws, each side piece is provided with a journal to receive a shaft which carries a pulley or drum extending length-A wise of the machine said shaft projects at one end beyond the feet of the machine to receive a driving pulley.

The whole of the spindles are driven from the drum by one continuous belt which passes over the iii-st spindle and under the drum thence over the next spindle and so on to the last, it then passes over two Areturn pulleys each secured to the legs of machine by brackets and the operation is repeated. The proper amount of tension on the belt is regulated by raising or lowering the side pieces which carry the shaft or drum.

A board is secured to the front of the machine and the blind frame or other work to be bored rests thereon, by pressing it against the bits or drills all the holes are bored instantly an equal distance apart, thereby avoiding' the necessity of laying them out by hand and saving a great amount of labor and expense, should the distance between the bits or drills be greater than necessary it can be diminished by moving the radial arm or lever from a diagonal to a perpendicular position, this can be accomplished while the bits or drills are in motion-without stopping the machine should it become necessary not to use the whole number of bits or drills Those which are not required can be reversed so as to set the bits to face the back of the table or frame by raising the side pieces or drum.

I have fully tested the experimental machine and the various points specilied and find it to work in a good and satisfactory manner. It can be used for other purposes besides boring blind panels such as drilling brass or iron castings by substituting the proper tools. l

Having thus set forth the peculiar nature of my invention and to enable others skilled in the art to make and use the same, I will now proceed to describe it and certify that the accompanying drawings are a full and correct representation of the same, like letters corresponding with like parts.

Figure 1 represents a side elevation of the machine with the radial arm or lever set over and the bits or drills at the fullest distance apart. Fig. 2 represents a side elevation of the machine showing the radial arm or lever in a perpendicular position and the bits and drills contracted to the smallest space. Fig. 3 is a plan of the same. Fig. at, an end view.

A, Figs. 1, 2, 3, a, represents the bed or frame of the machine supported by the feet B B and strengthened bybars C Cf.

D is an upright standard terminating in the guard E.

F is a radial arm or lever which turns on a stud at the lower end of the standard D. The upper end slides in any position on the guard E andis kept in position by a j am nut and bolt. The radial arm or lever F is provided with a number of slots or holes an equal distance apart to receive bolts which secure a series of rods or bars Gr Gr G Gr G Gr &c. to it. The lower ends of said rods or bars are provided with a forked end H which rests and slides on the bed or frame Apand carries lips or journals in which the spindles I I I I I &o. revolve lwhich hold the back over tWo pulleys O and P secured by bits 0r drills.

J J are side pieces, one of which is secured to each side or foot B B and has a jam nut and bolt to hold it in any position. Said side pieces are provided With journals which carry a shaft on Which is the drum L and 'driving pulley M.

brackets to the feet B B.

I elaim- A series of forked rods or bars G G G G 15 &o. Connected to the radial arm or lever F which slides upon the guai-'d E substantially and for the purpose specilied.

` E. P. DRAKE. Witnesses:

E. F. HACKETT, I. A. VooD. 

